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F. G. REDINGTON IMPLEMENT FOR CLEANING THE THREADS OF MINERS LAMPS April 1, 1924. 1,488,648

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FRANKLIN G. BEDINGTON, OF "WILTQN, NORTH DAKOTA.

IMPLEMENT FOR CLEANING TEE OF MINERS LAMPS.

' Application filed Ma 7, 1923. Serial No. 637,290.

To all whom. it may concern:

Re i t known that I. FRANKLTN REDTNG- TON. a citizen of the United States, residing at Vfilton. in the county of McLean and State of North Dakota, have invented certain new and useful Improvements in implements for Cleaning the Threads of Miners Lamps, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to implements for cleaning screw-threads, and particularly to an implement for cleaning the screw-threads whereby the water chamber and the carbide chamber of a miners lamp are engaged with each other.

In the use of lamps of this character, a kind of cement forms in the threads of these lamps which tends to hold the two sections of the lamp from unscrewing and which prevents the screwing of one section into the other section. It is necessary, therefore, for the miner to constantly remove this cement or accumulation from the male and female threads of the lamp. This is ordinarily done by the use of a penknife, but this is particularly unsatisfactory for cleaning out the female threads of the upper section of the lamp.

The object of this invention is to provide a cleaning implement of this character which is formed'with two blades, one of which is particularly adapted for cleaning out the male threads of the lower section of the lamp and the other for cleaning out the, female threads of the upper section of the lamp.

A further object is to provide a tool of this character which is very simple, strong, convenient and effective.

My invention is illustrated in the accompanying drawings, wherein 1- Figure 1 is a side elevation of my implement in one of its applied positions, the handle being partly broken away;

Figure 2 is a fragmentary perspective view of the implement;

Figure 3 is a fragmentary perspective view looking at the other side of the implement from that shown in Figure 2;

Figures 4 and 5 are diagrammatic views illustrating the manner in which the implement is used for removing the accumulation in screw-threads;

Referring to these drawings, it will be seen that the implement consists of a shank 10 which extends through a wooden handle 11 and carries at its outer end a nut 12. A pin 13 is driven through the shank and bears against the forward end of the handle.

The shank, which may be of iron, has welded to it or otherwise engaged therewith a steel blade 14 which is slightly bowed or curved from end to end, as seen from Figure 2. This blade 14 has, therefore, a concave inner face and a convex outer face. The blade at one end is beveled oppositely, as at 15, upon its convex face so as to provide a cutting edge. The inside face of this portion of the blade is flat. The inside face of the opposite end of the blade is beveled, as at 16, in opposite directions from the butt to the point and the outside of the blade is flat, that is it is unbeveled, though it is of course, curved longitudinally.

l i ith a device of this kind, when it is desired to clean the threads of the carbide chamber the concave side of the blade is turned toward the screw-threaded wall of the chamber, and when cleaning the female threads of the upper part or water chamber of the lamp the convex side of the blade is turned toward the wall of the chamber so that the point 16 will engage in these threads and clean them.

A tool of this character has been found thoroughly effective in practice and with it the threads of a miners lamp may be very quickly cleaned of all accumulation so as to permit the two sections of the lamp tobe readily engaged with each other. Inasmuch as the threads may be readily kept clean, there is much less chance of the carbide accumulating between the threads andpreventing the two parts from being unscrewed. The wooden handle is very firmly held in place by the nut and pin connection.

I claim 1. An implement for the purpose described comprising a handle and a shank engaged with the handle, the extremity of the shankbeing formed with a blade extending transversely to the shank in opposite directions, said blade being curved longitudinally so that the blade has a convex face and a concave face, one end of the blade being pointed and beveled laterally and toward the point and having its opposite face flat.

2. An implement for the purpose described comprising a handle and a shank,

the extremitv of the shank being formed blade and the opposite face of the blade 10 with a blade extending transversely to the being transversely flat. shank said blade being curved longitn- In testimony whereof I hereunto aifix my dinally so that the blade has a longitudinally gn re. 5 gonvex face and a longitudinally concave FRANKLI J G REDINGTON.

uace, the blade being pointed, the concave mark face at one end of the blade being trans- Witnesses to mark: versely beveled in opposite directions, this A. M. DAHL, beveled portion extending to the point of the G. H. KENNEY. 

